36989021 has 4 divisors (see below), whose sum is σ = 37015932. Its totient is φ = 36962112.

The previous prime is 36988999. The next prime is 36989039. The reversal of 36989021 is 12098963.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12098963 = 37 ⋅326999.

It can be written as a sum of positive squares in 2 ways, for example, as 18369796 + 18619225 = 4286^2 + 4315^2 .

It is a cyclic number.

It is not a de Polignac number, because 36989021 - 2¹⁰ = 36987997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36989521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11276 + ... + 14181.

It is an arithmetic number, because the mean of its divisors is an integer number (9253983).

Almost surely, 2^36989021 is an apocalyptic number.

It is an amenable number.

36989021 is a deficient number, since it is larger than the sum of its proper divisors (26911).

36989021 is a wasteful number, since it uses less digits than its factorization.

36989021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26910.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 36989021 is about 6081.8599951002. The cubic root of 36989021 is about 333.1892229278.

The spelling of 36989021 in words is "thirty-six million, nine hundred eighty-nine thousand, twenty-one".